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Species · Indiana · BBS 2025 Release · 1966–2024

Yellow-throated Vireo Population Trend in Indiana

All statesForest birds

Yellow-throated Vireo in Indiana has risen sharply: up 53% on the route-weighted index since 1968.

+53%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
61Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow-throated Vireo Trends in IndianaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Yellow-throated Vireo has risen sharply in Indiana: up 53% on the route-weighted index since 1968.

Yellow-throated Vireo Population Forecast in Indiana

If the recent trend holds, Yellow-throated Vireo in Indiana is projected to rise about 15% by 2029 — from 1.3 in 2024 to a central estimate of 1.5 (95% range 0.76–2.3). A 5-year backtest shows a typical error of ±30.2%, with 100% of held-out values landing inside the 95% band.

+15%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
1.5Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.76–2.395% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±30.2%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Yellow-throated Vireo in Indiana is projected to rise about 15% by 2029 — from 1.3 in 2024 to a central estimate of 1.5 (95% range 0.76–2.3). A 5-year backtest shows a typical error of ±30.2%, with 100% of held-out values landing inside the 95% band.19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20251.50.712.3
20261.50.722.3
20271.50.732.3
20281.50.752.3
20291.50.762.3

Yellow-throated Vireo Survey Routes in Indiana

Routes recording Yellow-throated Vireo in Indiana.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Spencer1020241974
Belmont820241982
Georgia820241999
Celestine720241979
Hoosier520241990
Wallace520241999
Azalia420241982
Sexton420161987
Indian Spgs320241986
Clear Spring320241981
Portage 2320152006
Hebron220101966
Berne220221975
Brazil220241966
Washington219911991
Cumback220211966
Millersburg220141982
New Phila220241982
Corydon220241966
Evansville220121966
New Castle220222016
Witts Station220242001
Cross Plains220241999
Gary119881983
South Bend119831973

Yellow-throated Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.